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During recent years, more and more of the work involved in coremaking and foundry mold making is being done by machines. As work in foundries becomes increasingly automated, the average productivity of each worker is greater. Thus, while the production of many kinds of cast metal items has been rising, an increased demand for cores will probably not result in an increased demand for coremakers. The U.S. Department of Labor forecasts that employment of foundry mold and coremakers will decline 16 percent from 2018 to 2028. Changes such as plastic being used in place of metal for some automobile components, has resulted in reducing the overall need for coremakers and related workers.

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